Reasons not to use (i.e., be used by) Facebook - Psychological Harm - Richard Stallman
Alice Clearwater

Even if Facebook makes this change, it will be unacceptable because companies and the state will be able to connect the account with your real identity. In order for the site not to mistreat people, it must let you have one account to show your boss and your parents, another for your friends, and others for various kinds of political activism.